iAd not removing from view when receiving an error

Question

I have implemented the bannerView didFailToReceiveAdWithError: as such

- (void)bannerView(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error 
{
    _bannerView.hidden = NO;
}

could you please let me know why it doesn't go away when the error is present please

i am getting this in the log:

2012-10-27 15:40:57.367 MinePedia[22467:11903] [AppDeveloper]: 
ADBannerView: Unhandled error (no delegate or delegate does not implement didFailToReceiveAdWithError:): 
Error Domain=ADErrorDomain Code=3 "The operation couldn’t be completed. Ad inventory unavailable" 
UserInfo=0x7192530 {ADInternalErrorCode=3, ADInternalErrorDomain=ADErrorDomain, NSLocalizedFailureReason=Ad inventory unavailable}

Answer 1

Make sure you have _bannerView.delegate = self; after you create the instance of AdBannerView